#Windows10 is on more than 900M devices! Thanks to our customers, we added more new Windows 10 devices in the last 12 months than ever before. From PCs to HoloLens to Xbox to Surface Hub, Windows continues to power innovation—with more to come next week! https://t.co/G3CRdkFoPTpic.twitter.com/38fKk50IEH

The number was confirmed by Corporate Vice President of Modern Life & Devices Yusuf Mehdi who posted:

#Windows10 is on more than 900M devices! Thanks to our customers, we added more new Windows 10 devices in the last 12 months than ever before. From PCs to HoloLens to Xbox to Surface Hub, Windows continues to power innovation—with more to come next week!

The most interesting part of the tweet is the suggestion that Windows 7 users are upgrading faster to Windows that they did when the operating system was free in 2015.

The number is still shy of Microsoft’s 2015 target of 1 billion devices running Windows 10 by 2018, but given that the PC installed base seems relatively stable it appears they will get there eventually.